A memo from the acting deputy attorney general instructs officials to identify state and local laws and policies that “threaten to impede” the Trump administration's immigration efforts.

State and local leaders across the country are bracing for a tidal wave of aggressive immigration policies and possible mass deportations that President Donald Trump has vowed to enact in the hours and days following his inauguration Monday.

The policy was issued as the new Republican administration prepared to step up policing of illegal immigration in cities with significant migrant populations.

In line with Trump’s edict, CNN’s Natasha Bertrand, Priscilla Alvarez, Haley Britzky and Oren Liebermann report. They’re expected to beef up existing operations to support Customs and Border Protection,

The Trump administration has moved with lightning speed to roll out the president’s immigration agenda, effectively closing off the US southern border to asylum seekers, severely limiting who’s eligible to enter the United States and laying the groundwork to swiftly deport migrants already in the country.

Immigrants rights groups are already contesting President Trump's sweeping executive orders aimed at combating illegal immigration.